Polishing compound



Patented June 8, 1926. I A I A UNlTED STATES PATENT OFFICE.

rm w. mass, or ,xusneon, IIOHIGAH.

romsnmo concern.

Drawing. Application fled June 88,14. Serial Io. 788,549.

This invention relates to certain new and The polishing material may be used acuseful improvements in polishing 'comcording to any of the known methods empounds especiall adapted for use on metal ployed for (polishing or finishin of metal surfaces for prod ucin a highly finished sursurfaces an in conjunction wit any ma-' 5 face on metal either iefore or after a lapchine so employed.

ping treatment or grinding of the metal The use of oils with the compound is, of face. course, essential. A mixture consisting of Recently the so-called lapping process 50% of a cutting oil and 50% of kerosene has been lntroduced for treatment of many has been advantageously employed and mixed 1c automobile parts. This process, however, with the other ingredients to produce a body leavesga somewhat feather or minutely of the consistency of paste, although the roughened metal surface, w ich has to be uantity of oil may be varied at will. While removedin some manner in order to give t e compound is, of course, intended for the highly finished or smooth surface re- .mixture with a cutting oil or the like, it is quired, for instance on automobile piston tobe understood that t emanufacture therepins or the c linder bores. Various mateof may embody alone the mixing of the sevrials or abraslves have been used to produce eral ggiund or pulverized ingredients, and these highly polished or smooth surfaces, may sold in such form or su uent the lprincipal ingredient of which has gen-' mixing with a cutting oil, or the m1 ing eral y been powdered emery. We have with the'oil ma beraccomplished at the found, however, that the use of a finely initial compoun ing of the ingredients. ground or pulverized cementitious material The basic principle of this compound prefas ordinary cement (hydrated lime and a erably embodies the combination of ingredinuniber of other high temperaturecements cuts as above outlined, and while a com may be employed) as a'polishing material pound formed of the Proportions previously in itself alone is, capable of producing a stated 1s capable. o producing optimum fairly good'surface. results, it is to be understood that such pro- The great advantages from the use of ceportions may be chan to suit different ment or similar material as a polishin subcharacteristicsof meta -surfaces,.as well as J0 stance, however, is not secured until the the substitution of equivalent materials.

same is mixed with another regularly em- What is claimed as new is:

ployed polishing or grindin materia for 1. A polishing compound-including a finemstance pumice stone. Furt er to enhance mixture of cement,.pumice stone, the value of the process a. certain 'percenta lers earth and emery.

86 of fullers earth is also incorporated into t e j 2. A polishing comfpound including a fine- I polishing material, but the final optimum ly und mixture 0 cement, pumice stone,

results are not secured by the process until fu ers earth, emery-and cutting oil.

finely ground emery, and more especially the 3. A polishing compound including a fineso-called Turkish emery, is incorporated as 1y ground mixture of the following ingredi- 40 one of the ingredients of the compound. cuts in the proportions stated, to wit: ee-

We have found that cement, used as a ve ment, 16 ounces; pumice stone 1% ounces;

hicle or carrier, and an we of the above fullers, earth, ounce, an emery 1% named hshing materials gives good reounces.

sults an we do not wish to confine our in- 4. A polishing comfpound including a finevention or compound to the use of the above 1y ground mixture 0 the following ingredifour ingredients. Any combination of one cuts in the proportions stated, to wit c'e-' or more of them conjunction with cement ment, 16 ounces; pumice stone, 1% ounces; or with a cementitious material, as noted, fullers earth, %-ou'nce; emery 1 ,5 ounces;

0 may be advantageously employed. and an oil embodying a mixture of cutting 5 mixture which we have found to W: oil and e. I T optimum results consists of 16 ounces o 00- In testimony whereof I aflix my signtaure. ment, 1% ounces of pumice stone, 1% ounces of Turkish may and 5 ounce of fuller: FRED W. 

